06-18-2008
The paging space (at least one paging space) should remain on rootvg, as this is the volume group activated and mounted first on boot time. The machine needs to hve access to at least one paging space during boot.
You could delete the other swapspaces and create them anew on some SAN disk. Notice that all swap spaces should be of equal size: AIX uses them in a round-robin-schema. If you want to make the swap faster create more swapspaces and put all but one of them on the SAN storage. Do NOT create one big swap on the SAN and a small one in the rootvg, as is oftenly seen.
If the Websphere LV should be on rootvg or not is a matter of taste: some claim, that binaries should go along with the OS and only data should be on SAN storage. Others claim that binaries should reside with the data they work on.
In your case it is still not clear where the error comes from, as aside from the error everything looks normal. Maybe the error report (issue "errpt" and "errpt -a" respectively) might tell you something.
If you can, back up the LV, delete it and create it anew, then restore the data. Another possibility would be to backup the LV, create a new LV somewhere else, restore the data to it, then umount the original and mount the new one - takes 1 minute and an application restart.
Don't care if this is a production machine when proposing a downtime: if the management of the data center hasn't provided for some maintenance downtime then the management has made a GRAVE CONCEPTUAL error - it is well known that machines do not run for an infinite time - period. So it is their fault, not yours. You are just pointing it out. They may wince and they may whine, but in the end you'll get your downtime.
bakunin
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